Auxiliary loading wing for scrapers



June 2l, 1932.- w. H. GUY ETAL AUXILIARY Lomme WING Fon sc'mmns FiledJan. `1?. 1931 .y i uvEN-rons WmHGu/,lra D. jug and .Y Q E S ATTORNEYPatented June 21, 1932 f UNITED l STATES PATENT oFFica WILLIAJI n. GUY,nu D. GUY, AND aonnar E. GUY, or s'rocxroN, ca uFonNIa AUXILIARY LOADINGWING FOR SCRAPERS Application led January 17, 1931. Serial No. 509,427.

This invention relates to scrapers, and particularly to Scrapers of thatcharacter shown in our Patents-Nos. 1,497,505 dated June 10, 1924, and1,784,284, dated December 9, 1930; though the invention may be appliedto other types of Scrapers as well.

In scraping operations the dirt as scraped and dug up b the advancingblade is always pushed ahea somewhat owing to the resistl. ance betweenthe dirt and the upwardly sloping blade which retards the movement ofthe dirt along the blade and into the bowl of the chamber. Thisresistance is accentuated as the bowl becomes loaded andthe `1I dirt isheaped deeply in the bowl, and a relativel large rcentage of the dirtbeing dug oryscrapedpis then pushed ahead. As a result some of the dirt,although dug and loosened from the ground, is not received into 'n thebowl but passes to the sides of the same,

andin the aggregate a considerable quantity of dirt is thus atleast temorarily lost.

The rincipal object o our invention is to avoid tliis loss by providingwin s arranged Q5 ahead of the bowl and associated t erewith in such amanner that all the dirt as dug and pushed ahead of the bowl will beretained in the transverse area between the sides of the bowl, so thatit must all ultimately pass into 80 the same. The result of nipping ascraper with these wings is that t e loading time is appreciably cut andas much asa greater load is received in the bowl with no greaterexpenditure of power. The wings are also mountedso that when the scraper1s in a non- Y digging or dirt-conveying position said wings areautomatically raised clear ofthe ground so that they do not interferewith the turning of the'scraper, nor do they tend to contact with anthing adjacent the ground and be possibly nt or distorted.

A further object of the invention is to produce a simple and inexpensivedevice and yet one which will be exceedingly effective for the pur sefor which it is designed.

These ob]ects we accomplish by means of .suchstructure and relativearrangement of parts as will fully appear by a perusal of the followingspecification and claims.

5 In the drawing similar characters of ref erence indicate correspondingparts in the several views:

Fig. 1 is a fragmentary side elevation of a scraper showing our improvedwing arrangement. 5F

Fig. 2 is a fragmentary sectional plan of the left hand side of thescraper taken on the line 2-2 of Fig. 1.

Referring now more particularly to the characters of reference on thedrawing, the C0 scraper depicted is of the general type shown in theabove mentioned patents, and includes horizontal frames 1 upstandingfrom which are parallel and substantially rectangular side walls 2, thespace between which forms the load carrying 'area of the scraper. Ablade and apron member 3 disposed at a downward acute angle to ahorizontal plane extends between the frames a short distan-ce back oftheir forward ends. This blade delivers onto an endless conveyor onwhich the dirt passes from the blade and by which it is conveyed to anddischarged over the rear end of the structure. This arrangement isparticularly shown in Patent No. 1,497,505, and forms no part of thepresent invention. The frame is Tockably supported intermediate its endsand clear of the ground on endless track units 4 as shown in saidpatents, so that said frame may be tilted down at its forward end inorder to enable the blade to engage the grond in scraping or diggingrelation therewit A tongue comprisingtransversely spaced arms 5converging together at their forward ends to form an A-shaped memberextends rearwardly from and is connected to the forward end of thedrawbar of a tractor, and at its rear end has pivotal connection withthe side walls 2 near the front and bottom of the same. The connectionon each side is made by a pair of heavy transversely spaced andhorizontally alined bars 6 which at their rear ends straddle thecorresponding wall 2 so that one bar is on the inside and one on the 9"outside of the same; a pivot bolt 7 passing through said wall and thebars. The bars form extensions of the corresponding tongue arm and attheir forward ends are rigidlyl secured thereto.

extends from ahead of the same some distance to the rear end of the bar6, so as to overlap the side wall somewhat though being separate fromthe same. The upper and lower edges of the wing are parallel to thetongue and are some distance above and below the' saine. The depth ofthe wing below the tongue is such that when the scraper is tilted to adigging position (in which position the ongue is substantially parallelto the ground) the bottom edge of the wing is about on a level with thebottom of the blade 3, as shown in Fig. 1, or so that it slightlyengages the ground. Also with this positioning of the wing the rear edgeof the same is close to the lower cutting edge of the blade. It willthus be seen that as the dirt is dug and the scraper advances, any dirtwhich may be pushed ahead of the blade is retained in place relative tothe side lwalls by the side wings 8, so that al1 this dirt will beultimately loaded onto the scraper. This, as will beI evident, willeffect the desired economy in loading time and will increase the volumeof the dirt loaded.

When the scraper is raised to a non-digging or load-conveying positionthe adjacent end of the tongue is of course raised likewise, thuspositively raising the wings clear 'of' the ground, as indicated indotted lines in F ig. 1. The wings then offer no interference to theturning of the scraper nor are they apt to catch against the ground orany obstruction tending to bend the same. To thus raise the scrape-r thesame mechanism is preferablyused, as is shown in Patent No. 1,784,284.This mechanism compris-es essentially a beam 9 pivoted at its forwardend onto the tongue adjacent its forward end and extending` thence overthe top of the body of the scraper at the front. At this end said beamisengaged by a mechanism acting to move the ad]acent end of the scraperbody longitudinally relative to the beam and thus tilting the same andeffecting a raising or lowering of said scraper' body.

From the foregoing description it will be readily seen that we haveproduced such a device as substantially fulfills the objects of theinvention as set forth herein.

While this specification sets forth in detail the present and preferredconstruction of the device, still in practice such deviations from suchdetail may be resorted to as do not form a departure from the spirit ofthe invention, as defined by the appended claims.

Having thus described our invention what we claim as new and useful anddesire to secure by Letters Patent is:

1. In combination, a scraper bowl having side walls, forwardlyextending` draft arms pivoted on the walls on the outside, said'armsclose to and ahead of the walls being bent transversely so thattheir'inner faces lie inwardly of the inner faces of the corresppndingwalls, and wings secured against the inner faces of the transverselybent portions of the arms and extending rearwardlyv thereof to overlapthe side wal tures.

vWILLIAM H. GUY ROBERT E. GUY. IRA D. GUY.

